Prayer (a collaboration with MUSE by META)

Osanri prayer mountain run by Yoido Full Gospel Church in Seoul, is the world's largest congregation. Hundreds of little grottoes in the hills, some of them honest-to-goodness caves under two meters high with nothing but a cushion and a light. People queue for keys. Dawn prayer starts at 4 AM, fasting encouraged, round the clock.

It was founded by Jasil Choi, the woman who restarted Korea's fasting-prayer movement and the church's founder once said the whole 800,000-member thing came down to five hours of prayer a day.